Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Jun. 30, 2012	Sep. 30, 2011
Components of intangible assets by major class subject to amortization
Original Cost	$ 19,423	$ 10,423
Accumulated Amortization	4,103	1,917
Net Book Value	15,320	8,506
Trade name [Member]
Components of intangible assets by major class subject to amortization
Estimated Useful Life	10 years	10 years
Original Cost	1,900	900
Accumulated Amortization	207	73
Net Book Value	1,693	827
Non-compete agreement [Member]
Components of intangible assets by major class subject to amortization
Estimated Useful Life	5 years	5 years
Original Cost	1,500	500
Accumulated Amortization	289	81
Net Book Value	1,211	419
Below market lease [Member]
Components of intangible assets by major class subject to amortization
Estimated Useful Life	5 years	5 years
Original Cost	900	900
Accumulated Amortization	280	145
Net Book Value	620	755
Customer relationships [Member]
Components of intangible assets by major class subject to amortization
Estimated Useful Life	10 years	10 years
Original Cost	13,000	6,800
Accumulated Amortization	1,471	548
Net Book Value	11,529	6,252
Order backlog [Member]
Components of intangible assets by major class subject to amortization
Estimated Useful Life	1 year	1 year
Original Cost	2,100	1,300
Accumulated Amortization	1,833	1,047
Net Book Value	267	253
Transition services agreement [Member]
Components of intangible assets by major class subject to amortization
Original Cost	23	23
Accumulated Amortization	23	23
Net Book Value	$ 0	$ 0
Transition services agreement [Member] | Maximum [Member]
Components of intangible assets by major class subject to amortization
Estimated Useful Life	1 year	1 year